A Strange Adventure Starting Before the Transmigration to Gensokyo

Easygoing + funny + action.

He witnessed the darkness of demons and monsters running rampant during the chaos at the end of the Qin dynasty, and he once walked through the mountains of Japan's Asuka period. He traveled through one era after another, defeated one enemy after another, and met face after face. At last, he understood that all his journeys were converging toward the same destination.

It was a paradise surrounded by a barrier, a land of fantasy where humans and youkai lived side by side. A thousand years later, its name would resound in the hearts of everyone who knew of fantasy.

...Damn it, I can't think of anything else to put in this introduction. Anyway, this is a story that begins before Gensokyo was founded. It's also about the untold past before Gensokyo came into being. A lighthearted slice-of-life story, with the occasional serious moment.